Method of operating a natural gas furnace with propane
Patent
·
OSTI ID:6464477
This patent describes a method of using propane at a predetermined input rate in a burner of a furnace of the type designed for operating with natural gas at the same gas input rate and with a heat exchanger having a predetermined temperature limit and having its combustion air supply level controlled by selective regulation of the draft inducer motor speed. It comprises: establishing the desired draft inducer motor speed when natural gas is used in the burner; applying to the desired speed a predetermined multiplier to obtain slightly higher speed and excess air levels for combustion; and operating the draft inducer motor at the slightly higher speed when using propane in the furnace to thereby maintain the temperature in the heat exchanger below the predetermined temperature limit.
- Assignee:
- Carrier Corp., Syracuse, NY (USA)
- Patent Number(s):
- US 4962749; A
- Application Number:
- PPN: US s 7-435904
- OSTI ID:
- 6464477
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
034000 -- Natural Gas-- Combustion
09 BIOMASS FUELS
092000* -- Biomass Fuels-- Combustion-- (1990-)
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR FLOW
ALKANES
CHEMICAL REACTIONS
COMBUSTION
DESIGN
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUEL SUBSTITUTION
FUELS
FURNACES
GAS FLOW
GAS FUELS
GASES
HEAT EXCHANGERS
HYDROCARBONS
NATURAL GAS
ORGANIC COMPOUNDS
OXIDATION
PROPANE
THERMOCHEMICAL PROCESSES
034000 -- Natural Gas-- Combustion
09 BIOMASS FUELS
092000* -- Biomass Fuels-- Combustion-- (1990-)
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR FLOW
ALKANES
CHEMICAL REACTIONS
COMBUSTION
DESIGN
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUEL SUBSTITUTION
FUELS
FURNACES
GAS FLOW
GAS FUELS
GASES
HEAT EXCHANGERS
HYDROCARBONS
NATURAL GAS
ORGANIC COMPOUNDS
OXIDATION
PROPANE
THERMOCHEMICAL PROCESSES